Insulator



Dec. 18, 1928.

F. REITER INSULATOR Filed Nov. 14, 1925 INVENTOR Fianz F1 eifer.

ATITORNEY Patented Dec. 18, 192.8.

U I EM TE PATENT OFFICE.

rmz 3mm, 01' IBERLIN-CHARLOTTENBURG, GERMANY, .Assronoa T wns'rme- HOUSE ELECTRIC ANDMANUFACTURING COMPANY, A coaroaarron or PENNSYL- VANIA.

, INSULATOR.

Application filed November 14,1925, Serial No. 69,054, and in Germany January 28, 1925.

My invention relates to insulators and particularly to terminalmeans therefor.

One object of my invention is to provide an insulator that shall be free of damage caused by expansion forces between its conducting and dielectric parts. v

Another object of my invention is to provide an insulator terminal structure in which a member that has hitherto been considered necessarily ofseveral parts shall be constructed as a single integral member.

A further object of my invention is to provide an insulator that shall be simple and durable in construction, economical to manufacture and effective in its operation.

In an insulator of a certain type, in which the dielectric body is provided with a cylindrical projection having an enlarged head or outer end, it has been usual to provide a terminal structure comprising a halved metal ring disposed around the cylindrical dielectric portion and screwed or riveted together at the adjacent ends of its component halves.

In such a structure, where rivets are employed or where screws become rusty, the

' terminal member is difficult to remove. Al-

so, where the screws are tightened too much during cold weather, they may be fractured when a rise of temperature occurs. It is my aim to provide an insulator that shall overcome the above-mentioned objections and that shall not only comprise fewer andsimpler parts but that shall be easicr to assemble.

Accordingly, in practicing my invention,

I provide an insulator of the above indicated character and a terminal structure therefor that permit the use of a ring memthe device. shown Fig. 5 is, a detail view of a portion of the device shown in the other figures, taken along a horizontal section as indicated by line V-V in Fig. 4. a

The device comprises, ingeneral a dielec tric body member having a petticoat portion 1, only a portion of which is shown, a cylindrical terminal portion 2 projecting from the body member, and a laterally-projecting por tion orflange 3 adjacent to the outer end of the cylindrical portion 2. A terminal structure 4, in the form, of a composite ring, surany suitable material formed as two half rings but, since it. is preferably of pliable material such as lead, may be formed as a nearly Whole or single integral ring having but one perimetra-l slot. whereby it may be distended laterally and placed around the portion 2 from the sidethereof. A halved ring or spacer element 7 closely fits in position around the cushioning ring 6 and has its outer cylindrical surface of a diameter substantially equal to, or slightly greater than, the diameter of the dielectric flange 3.

An outer ring 8, constituting a single integral element, is of such shape and size-as to freely pass over the flange 3 into closely fitting position around the spacer ring 7 and is provided with laterally-projecting means or hooks 9 for supporting suspension cables 10. Enlarged or reinforcing portions 11 having longitudinal recesses 12 therein are provided on the outer perimeter of the ring 8 at diametrically opposite positions substantially right-angularly related to the hooks 9.

The recesses 12 provide spaces between the rings 7 and 8 for the reception of means, such as .pliablemetal members 14, for holding the rings'together inoperative position on the cylindrical portion 2. After longitudinal insertion through the recess 12, the pliable members 14 are bent laterally at the ends 15 thereof.

WhileYI have shown and described a particular form of my invention, changes may be el'lected therein without departingfromthe spirit and scope thereof, as set forth in the appended claims.

I claim as my invention:

1. An insulator comprising a dielectric member including a bony portion having a cylindrical portion projecting therefrom and a portion projecting laterally from adjacent to the outer end of said cylindrical portion and a con'iposie ring structure including a divided inner ring surrounding said cylindrical. portion, an outer ring member constituting a single integral element adapted to pass over said projection and to closely tit in position around said divided inner ring, and a pliable member extending longitudinally between said rings and bent laterally at its ends for holding the rings together.

2. An insulator comprising a dielectric member including a body portion having a cylindrical portion projec ing therefrom and an annular laterally-projecting flange adjacent to the outer end of said cylindrical portion, and a composite ring structure including a divided inner ring surrounding said cyllindrical portion and having an outer diameter slightly greater than the diameter of said flange and an outer ring member constituting a single integral element adapted to pass over said flange and to fit in position around said inner ring, one of said rings having a longitudinal recess therein to provide an opening between said rings, and a pliable member extending through said opening and bent lateraly at its ends to hold said rings together.

3. An insulator comprising a dielectric member including a body portion having a portion projecting therefrom and a portion projecting laterally from said projecting portion and a composite structure including a divided inner ring element surrounding said first projecting portion, an outer element having a single integral ring portion adapted to pass over said lateral projection and to closely fit in position around said divided inner ring element, and a member extending longitudinally between said rings and having laterally extending portions for holding the rings together.

In testimony whereof I have hereunto subscribed my name this 17th day of October.

FRANZ R-EITER. 

